I'm sure this is a silly thing but I can't seem to find where the colour for the dropdown menu's background colour for hover or mouse-over is.

It's always white when my mouse goes over it, the dropdown menu background colour is fine until mouse-over where it becomes white (Which is the same colour as the text). I've been through the entire .css and cannot find it anywhere.

Also, I've managed to loose the ability to use the site's heading title a text and tagline, happened after I switch to an image which I've since removed. Appears on other themes though.

Any assistance with this is greatly appreciated - also, top job on the theme, it's very nice!